<?php

namespace Spark\Resource;

use ReflectionClass;

class ResourceManager
{
    private $resourceTypes = [];

    private $namedResources = [];

    public function registerResourceType(string $name, string $type)
    {
        $refl = new ReflectionClass($type);
        $this->resourceTypes[$name] = $type;
    }

    public function createResource(string $type, array $options)
    {
        if (!array_key_exists($type, $this->resourceTypes)) {
            return null;
        }
        $resource = new $this->resourceTypes[$type]($options);
        return $resource;
    }

    public function createNamedResource(string $name, string $type, array $options)
    {
        if (array_key_exists($name, $this->namedResources)) {
            fprintf(STDERR, "warning: Redefining named resource %s\n", $name);
        }
        $resource = $this->createResource($type, $options);
        $this->namedResources[$name] = $resource;
        return $resource;
    }

    public function getNamedResource(string $name)
    {
        return $this->namedResources[$name] ?? null;
    }

    public function getAllNamedResources(): array
    {
        return $this->namedResources;
    }

    public function getAllResourceTypes(): array
    {
        return $this->resourceTypes;
    }
}